2025/10/29 by NGORAN, Ahou Régine, YAPO, Sopie Edwige Salomé, KOUASSI, Kan Modeste +5
#Gossypium hirsutum #cell suspension #cotton #elicitor #oligosaccharide #polyphenol
paper · doi:10.71655/uvcibv.sf9ff-mn014
Among the natural defense mechanisms that plants develop, we find polyphenols biosynthesis. Thus, in order to increase the natural resistance of cotton to Fusarium oxysporum f. sp. vasinfectum (FOV), we considered possibility of capacities induction of polyphenols production by oligosaccharide fraction (OSF) or fungal filtrate. The use of cell suspensions of cotton has enabled us to demonstrate that the addition of OSF extracted from two different pathogenicities of FOV strains, induce the production of polyphenols. The best polyphenols content were obtained with addition of OSF 10 % in cell suspensions. OSF of FOV14 (low virulent) strain stimulated polyphenols production up to 6.0-fold against 4.0-fold to OSF of FOV 17 (high virulent strain). So, pathogenicity degree of FOV strains is negatively correlated to polyphenols production in cell suspensions of cotton. This study revealed also the existence of a positive correlation between total sugar content in OSF of FOV and polyphenols accumulation in cotton cell suspensions. Thus, the results suggest that natural molecule such as oligosaccharides could be considered as treatment in order to increase the resistance of cotton FOV. This paper chiefly highlights the use of elicitors such as oligosaccharide of fungal origin aiming to limit chemical control in cotton culture.